CN201703427U - Steering gear equipped with damping rotary valve - Google Patents

Abstract

The utility model relates to a steering gear equipped with a damping rotary valve. The steering gear includes a steering screw and a valve core, the steering screw is hollow in structure, in the steering screw is arranged a connecting rod, one end of which is connected to the valve core, the valve core is sleeved on the connecting rod and is arranged in the steering rod, an annular groove is arranged on the external circumference of the valve core close to the end part of one end of the steering screw, the groove is provided with a sealing ring and a damping ring, the sealing ring is sleeved outside the damping ring. The steering gear is simple in structure and is free of vibration and noise, and can prevent the excessive rotation of the rotary valve while the pressure variation is less as well as can stabilize the system.

Description

The deflector of damped rotary valve

Technical field:

The utility model relates to a kind of deflector of damped rotary valve.

Background technology:

The deflector of using at automobile, especially passenger vehicle power steering, because the pressure fuel pump height that a lot of vehicles are selected for use, flow is big, and the pipeline of use is long, occur having when turning to " drone " sound, this sound is because the vibration of hydraulic pressure causes, because the sensitivity of rotary valve is higher, when load a little changes, rotary valve will rotate thereupon, but because inertia load has been crossed both allocations, rotary valve is rotated further, can not reach new balance position, rotary valve need oppositely go back to, and comes the back rotation rotary valve like this, not only build-up of pressure fluctuation, and system's instability produces abnormal sound.

Summary of the invention:

The purpose of this utility model is in order to overcome above deficiency, to provide a kind of simple in structure, changes hour at pressure, and it is excessive to stop rotary valve to rotate, and system can be stablized rapidly, does not produce vibration, can not produce the deflector of the damped rotary valve of abnormal sound.

The purpose of this utility model is achieved through the following technical solutions: a kind of deflector of damped rotary valve, comprise steering screw, spool, steering screw is a hollow structure, steering screw inside is provided with a pipe link, one end of pipe link is connected with spool, valve core housing is on pipe link, and place the inside of steering screw, position near steering screw one end end on the excircle of spool is provided with a circle groove, be provided with a circle seal ring and a circle damped ring in the groove, seal ring set is in the outside of described damped ring.

The utility model compared with prior art has the following advantages: under the situation that does not change the car load configuration, increase damped ring, like this under the situation that pressure diminishes, it is excessive to stop rotary valve to rotate, system can system can be stablized rapidly, do not produce vibration, solved the problem of abnormal sound.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A place structural representation of Fig. 1;

Number in the figure: 1-steering screw, 2-spool, 3-pipe link, 4-groove, 5-seal ring, 6-damped ring.

The specific embodiment:

In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection domain.

Show a kind of specific embodiment of the deflector of the utility model damped rotary valve as Fig. 1 and Fig. 2, comprise steering screw 1, spool 2, steering screw 1 is a hollow structure, steering screw 1 inside is provided with a pipe link 3, one end of pipe link 3 is connected with spool 2, spool 2 is enclosed within on the pipe link 3, and place the inside of steering screw 1, position near steering screw 1 one end ends on the excircle of spool 2 is provided with a circle groove 4, is provided with a circle seal ring 5 and a circle damped ring 6 in the groove 4, and seal ring 5 is enclosed within the outside of damped ring 6, like this under the situation that does not change the car load configuration, increase damped ring 5, under the situation that pressure diminishes, it is excessive to stop rotary valve to rotate like this, system can system can be stablized rapidly, do not produce vibration, solved the problem of abnormal sound, and structure is comparatively simple.

Claims (1)

1. the deflector of a damped rotary valve, comprise steering screw (1), spool (2), described steering screw (1) is a hollow structure, described steering screw (1) inside is provided with a pipe link (3), one end of described pipe link (3) is connected with spool (2), described spool (2) is enclosed within on the described pipe link (3), and place the inside of described steering screw (1), it is characterized in that: the position near described steering screw (1) one end end on the excircle of described spool (2) is provided with a circle groove (4), be provided with a circle seal ring (5) and a circle damped ring (6) in the described groove (4), described seal ring (5) is enclosed within the outside of described damped ring (6).

Images